Original image
Compressed image
Original Compressed
Fit

Nothing to compare yet.

Versions tried

Every version here is real and ready. Tap one to keep it instead.

How this was measured

Format
Visual match
Dimensions
Time

Just this image

Compress an image to 1 MB

This page opens Pocketsize with the size limit already set to 1 MB — the ceiling for a lot of email attachments, CMS uploads and document systems. Add pictures and the engine finds the best-looking version of each that fits, measured against the original rather than guessed.

The good news about a 1 MB budget: for most photographs it is roomy, so Pocketsize can usually stay at quality levels where the change is invisible to your eye — and it shows you the measured score and the side-by-side comparison so you never have to take that on faith.

Your pictures never leave your computer: the compression runs in your browser, on your own device, and you can verify that yourself in about a minute. After one visit it even works with no internet at all.

This page is Pocketsize with the plan pre-set for one job. Nothing is locked — change any control once it is open.

I need several photos under 1 MB each — one at a time?

No — drop them all at once. Every picture is compressed to the same plan in parallel, and the zip you download carries a written report of what happened to each file.

Will the image quality visibly drop?

Usually not at 1 MB. Every result carries a measured visual-match score, and the comparison slider lets you check with your own eyes before you keep anything.

What if my picture is already under 1 MB?

Pocketsize still tries to make it smaller — and if nothing beats the original, you keep the original. A result is never a bigger file.

Pocketsize

Every picture is saved several ways, measured against the original, and the smallest one that still looks right is kept. Nothing ever leaves your computer — after one visit, it even works offline.

Spacehold to flick between before and after — the fastest way to spot a difference
Ddifference heatmap
Ffocus mode — just the comparison
Escleave focus mode
move through the pictures
Deleteremove the selected picture
?this card

The same engine as a command line: pip install pocketsize · source & licence

This format cannot store transparency